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1、Grammar虚拟语气一、虚拟语气的含义：用来表示说话人所说的话并不是事实，而是一种假设、愿望、怀疑或推测。例如：IfIhadtime,Iwouldcertainlygotothemoviewithyou.IwishIwereawhitecloud.二、虚拟语气通过谓语动词的特殊形式来表示。例如Ifhewerehere,hewouldknowwhattodo.Ifyouhadcomealittleearlier,youwouldhavemether.Shesuggestedthatweshouldkeepemailingeachother.三、虚拟语气的用法虚拟语气用在非真实条件句中虚拟语
2、气用在宾语从句中虚拟语气用在表语从句、同位语从句中虚拟语气用在主语从句中wish和asif/though后的虚拟语气。虚拟语气用于非真实条件句真实条件句VS非真实条件句试比较：Ifitrainstomorrow,we’llhavetostayathome.IfIwereyou,Iwouldaccepttheoffer.虚拟语气在非真实条件句中的假设通常有三种情况：①与过去事实相反②与现在事实相反③与将来事实可能相反。非真实条件句中谓语动词形式条件从句主句与现在事实相反Ifsb.+过去式（be的过去式是were）sb.+would(should,could,might)+动词原形与过去事实相
3、反Ifsb.+haddonesb.+would(should,could,might)+havedone与将来事实可能相反Ifsb.+A.过去式B.weretodoC.should+动词原形sb.+would(should,could,might)+动词原形与现在事实相反（例句）IfI(be)richenough,I(travel)aroundtheworld.假如我很富有，我就会周游世界。(ThefactisthatIcan’ttravelaroundtheworldbecauseIdon’thaveenoughmoney.)IfI(have)acar,I(be)veryhappy.假如
4、我有一辆汽车，我应该很高兴。IfI(be)abird,I(fly)freelyinthesky.假如我是一只鸟儿，我就会在空中自由飞翔。werewouldtravelhadshouldbewerecouldfly与过去事实相反（例句）IfI(know)hertelephonenumber,I(call)her.假如我当时知道她的电话号码，我就会给她打了电话。(ThefactisthatIdidn’tcallherbecauseIdidn’tknowhertelephonenumber.)Ifhe(get)upearlier,he(catch)thetrain.假如他早点起身的话，他本来能赶
5、上那趟火车。hadknownwouldhavecalledhadgotcouldhavecaught与将来事实可能相反（例句）Ifshe(be)tomarryJack,she(be)happy.如果她嫁给杰克，她会幸福的。werewouldbe虚拟语气用于宾语从句表示“要求、建议、命令”等动词后面的宾语从句中的虚拟语气从句中用“should+动词原形”构成。而且should可以省去。用于此结构的动词常见的有：demand,order,request,require,insist,advise,suggest,propose,recommend,ask,decide,desire,prefe
6、r等。例如：Isuggestedthatthemeeting(should)beputoff.我建议会议延期举行。Thedoctororderedthatshe(should)stayinbedforafewdays.医生要她卧床休息几天。Theydemandedthattheirpay(should)beraised.他们要求增加工资。1.insist作“力言”、“强调”，suggest作“暗示”、“表明”等解时,宾语从句不用虚拟语气。例如：Thefarmerinsistedthathehadneverseenthecamel.Hispalefacesuggeststhatheisfri
7、ghtened.友情提醒虚拟语气用于表语从句、同位语从句在suggestion，advice，proposal，order,decision,plan，idea，desire等需要有内涵的名词后面的表语从句、同位语从句中，要使用虚拟语气。其谓语动词用动词原形或should＋动词原形。例如：Mysuggestionisthatweshouldgothereatonce.Whatdoyouthinkofhisproposal
